Weathering and Erosion

Front

What is weathering?

Back

Weathering is the process that breaks down rocks and minerals into smaller pieces through physical, chemical, or biological means.

Front

What is erosion?

Back

Erosion is the process by which soil and rock are removed from one location and transported to another, often by wind, water, or ice.

Front

What causes physical weathering?

Back

Physical weathering is caused by natural forces such as temperature changes, freeze-thaw cycles, and the growth of plant roots.

Front

What is chemical weathering?

Back

Chemical weathering involves the chemical alteration of minerals in rocks, often due to reactions with water, acids, or gases.

Front

How do tree roots contribute to weathering?

Back

Tree roots cause physical weathering by growing into cracks in rocks and breaking them apart.

Front

What is the role of lichens in weathering?

Back

Lichens contribute to weathering by producing acids that chemically break down rocks.

Front

What is acid rain?

Back

Acid rain is precipitation that has a lower pH due to pollutants in the atmosphere, leading to chemical weathering of rocks and soil.

Front

What is the difference between physical and chemical weathering?

Back

Physical weathering breaks rocks into smaller pieces without changing their chemical composition, while chemical weathering alters the minerals in the rocks.

Front

Can different soils have different sizes of earth materials?

Back

True, different soils can have varying sizes of earth materials, such as sand, silt, and clay.

Front

What is an example of a physical weathering process?

Back

An example of physical weathering is freeze-thaw action, where water seeps into cracks, freezes, expands, and eventually breaks the rock apart.